Granted Patent
Utility
US 4,569,760 · App. 06/678,471
Discharge shaft for a vertical centrifuge
Inventors:
Erhard Aufderharr, Ernst Gruebl, Siegfried Pfaff
Patented Case
View Patent ↗
Granted: Feb 11, 1986
Filed: Dec 5, 1984
Inventors
Erhard Aufderharr
Ernst Gruebl
Siegfried Pfaff
Assignee (at issue)
Krauss-Mafei AG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.